6. To examine the relationship between ASMT and PRE response rate and participant characteristics, including: gender and racial/ ethnic status; severity and chronicity of TBI; baseline intellectual, memory, and executive function; severity of pre-treatment anger; presence/ severity of PTSD; degree of emotional blunting (alexithymia); involvement/ absence of an SO; and discrepancies between self- and SO report of participant anger. Relationship between treatment site and treatment response will also be examined.